Update 2024: HMRC released new tax rates applicable to gains from October 30, 2024. The new rates are 18% for the basic rate band and 24% for all higher bands. Our calculator uses the new rates for 24-25. You'll need to consider whether you made disposals before October 30 in the 2024-2025 FY and whether the previous rates of 10% and 20% apply.
How to calculate crypto taxes with our tax calculator
Select the year you’re filing for
Choose whether you’re figuring out taxes for a single trade or your overall gains (multiple trades)
Fill in your figures
Check your estimated tax bill
How do we estimate your capital gains taxes?
Our tax tool uses the information you’ve provided to identify the Capital Gains Tax bracket you fall into based on your annual income. These tax rates are then applied to the capital gains figures you’ve entered to calculate your estimated bill, with the Capital Gains Tax free allowance considered. If your income overlaps different tax brackets, we apply these tax brackets proportionally to give you an accurate estimation of your bill.
We use the HMRC website as our source for Income and Capital Gains Tax rates, and these have been updated in line with the tax rises in the Autumn 2024 Budget. Our capital gains calculator does not factor in any losses you may have incurred or carried forward. It does not factor in any instances where your personal allowance may increase or decrease, any other tax credits, or consider whether you may have already utilised your Capital Gains Tax free allowance.Â
What if I don't have the information I need to use the capital gains tax calculator?
If you don’t know your figures, don’t panic - Koinly can figure them out for you. When you import your trading history to Koinly, it does all the hard work for you, including identifying your cost basis and the fair market value of any crypto income. It even factors in deductible trading fees, all automatically.
How Koinly calculates crypto taxes
Koinly makes crypto tax simple, whatever your transactions.
1. Connect accounts
Koinly supports more than 800+ exchanges, wallets, and blockchains automatically in most instances. Simply add your public address, API key, or upload a CSV file to import your data.
2. Review transactions
Check your data is imported correctly and your figures are accurate with automatic error detection and guides to help you every step of the way.
3. Generate tax report
Upgrade to a paid plan from £39 and generate the tax reports you need, however, you file. With 20+ crypto tax reports including a HMRC Capital Gains Summary and income reports, as well as the option to simply invite your accountant to handle it for you.
